Car-brake



UNITED sma PATENT QFFICE.

BENJAMIN F. MANIER, OF TROY, NEW YORK.

, CAR-BRAKE.

SPECIFICATION forming part Of Letters Patent No. 412,640, dated October8, 1889.

Application filed July 31, 1389- SerialNo. 319,248. (Nomodel) To allwhom it may concern:

Be it known that I, BENJAMIN F. MANIER, of Troy, in the county ofRensselaer and State of New York, have invent-ed certain new and usefulImprovements in Car-Brakes; and'I do hereby declare that the followingis afull, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference markedthereon, which form part of this specification, in

Figure 1 is a plan view of my improved cartruck brake for four-wheeledtrucks. Fig. 2 is a detail side view of one end of the truck. Fig. 3 isa transverse sectional view through line a; m, Fig. 2, looking towardthe wheels. Figs; 4 and 5 are detail views.

This invention is an improvement in brake mechanism for four-wheeledtrucks, and its object is to apply the brakes to the truckwheelssimultaneously and with equal power from either end of the car; and tothis end the invention consists in the novel construction andcombination of parts, as is hereinafter clearly set forth and claimed.

Referring to the drawings by. letters, A designates a four-wheeledtruck, the frame of which is preferably composed of compound upper andlower side beams B I), each of which is made up of two fiat metal barsset vertically edgewise and separated by interposed blocks a, a, butfirmly united bybolts, and these two beams are connected by uprights 0 Cand by transverse beams, as clearly shown and described in myapplication for Letters Patent on trucks, filed June 21, 1889, andserially numbered 315,075, and which is not herein claimed, as the brakemechanism maybe applied to other forms of truck-frames.

D D designate the axles, and dd the wheels.

E E designate brake -bars lying trans versely of the frame and exteriorto the wheels, their ends being supported by hangers F F, secured-tobars B B, as shown, and having horizontal grooves f f in them for thereception of the ends of the bars to permit lateral movement thereof.

G G designate the brake-shoe castings bolted to the opposite ends of thebars E E, and adapted to bind against the peripheries of wheels d d whenthe bars are moved ining brake-bar E, to which they are connected,

and they are pivotally connected at points opposite the centers of barsE by shackles or links t', as shown. The projecting end of each lever Bis connected by a chain it to the brake-operating shaft, (not shown bywhich strain can be put on the chain and the brakes operated.

J J designate connecting-rods, each made in two sections, connected by aturn-buckle j j for adjusting the length thereof. The ends of said rodsare horizontally bifurcated and embrace brake-bars E and levers I and H,as shown, being pivotally connected to said levers. These rods lie atopposite sides of the truck at right angles to bars E E and close to thebrake shoes at that side of the car, and they are connected to one leverH and one lever I at opposite ends of the truck, as said levers areoppositely placed at the ends of the truck.

K K designate retracting-springs, which, as shown, are of strap metaland have one end secured between the members of side bars B, adjoiningeach hanger F, and are bent downward over pins 7c and below bars E E,bearing against the inner edges of the latter and tending to force themoutward away from the wheels.

In operation,if the brake-chain be tightened at either end of the car,the inner ends of levers H and I at that end of the car will be drawnoutward,and this movement of the levers, through connecting-rods J J,draws the opposite pair of levers H and I against their brake-bar E andapplies the brakes to the opposite set of wheels, and simultaneously asthe ends of the first-mentioned levers are drawn outward they (the saidlevers) are fulcrumed at the points of attachment of rods J J thereto,and their outer. ends attached to the brake-shoes move inward and forcebrake: bar E inward and apply the brakes to the adjoining pair ofWheels, as indicated by the arrows in Fig. 1. I am thus able from eitherend of the car to apply the brakes to the four wheels of the trucksimultaneously.

It will be observed that while the connections of rods J to theoperative levers form the fulcrums thereof the points of attachment ofthese operative levers to the brakeshoes or brake-bar form the fulcrumby which the power for applying the opposite set of brakes is derived.When the brakechain is released, the springs K K throw the bars awayfrom the wheels.

Having thus described my invention, what I claim as new is 1. Thecombination, with a four-Wheeled truck, of a pair of brake-bars, thebrakeshoes thereon, the pairs of 'brake levers respectively pivotallyconnected at their outer ends to the brake-bars and to each other attheir inner ends, and the pair of rods pivotally connecting one lever ofeach pair with one lever of the opposite pair, substantially as and forthe purpose described.

2. The combination of a four-wheeled truckframe, the laterally-movablebrake bars mounted transversely in the frame adjoining each pair ofWheels and carrying brake-shoes,

substantially as described, with the pairs of brake-levers pivotallyconnected to the ends of each brake-bar, the link-connection between thelevers of each pair, and the brakechain for operating said levers, andthe pair of connecting-rods attached to one lever of each pair, and theretracting-springs, all substantially as specified.

3. The combination of the truck-frame, the grooved hangers thereon, andthe brake-bars resting in the grooves of said hangers opposite each pairof wheels, and the retractingsprings engaging said bars, and thebrakeshoes on said bars having rearwardly-projecting perforated ears,with the pairs of brake-levers pivotally connected to the ears of thebrake-shoes and to each other, and the brakeechain for operating saidlevers, and the connecting-rods pivotally connected to the oppositelevers of each pair near the pivoted outer ends thereof, allsubstantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I afiix my signaturein presence of two Witnesses.

BENJ. F. MANIER.

Witnesses:

E. A. STANL Y, JOHN TAYLOR.

